724155046729 has 3 divisors (see below), whose sum is σ = 724155897703. Its totient is φ = 724154195756.

The previous prime is 724155046721. The next prime is 724155046841. The reversal of 724155046729 is 927640551427.

The square root of 724155046729 is 850973.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 927640551427 = 881 ⋅1052940467.

It can be written as a sum of positive squares in only one way, i.e., 477197732025 + 246957314704 = 690795^2 + 496948^2 .

It is not a de Polignac number, because 724155046729 - 2³ = 724155046721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724155046721) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 425487 + ... + 1276459.

Almost surely, 2^724155046729 is an apocalyptic number.

724155046729 is the 850973-rd square number.

724155046729 is the 425487-th centered octagonal number.

It is an amenable number.

724155046729 is a deficient number, since it is larger than the sum of its proper divisors (850974).

724155046729 is an frugal number, since it uses more digits than its factorization.

724155046729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701946 (or 850973 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 724155046729 in words is "seven hundred twenty-four billion, one hundred fifty-five million, forty-six thousand, seven hundred twenty-nine".